<template>
    <div class="sidebar">
        <el-menu class="sidebar-el-menu" :default-active="onRoutes" :collapse="collapse" background-color="#324157"
			text-color="#bfcbd9" active-text-color="#20a0ff" unique-opened router>
            <template v-for="item in items">
                <template v-if="item.children">
                    <el-submenu :index="item.index" :key="item.index">
                        <template slot="title">
                            <i :class="item.icon"></i>
                            <span slot="title">{{ item.title }}</span>
                        </template>
                        <template v-for="subItem in item.children">
                            <el-submenu v-if="subItem.children" :index="subItem.index" :key="subItem.index">
                                <template slot="title">{{ subItem.title }}</template>
                                <el-menu-item v-for="(threeItem,i) in subItem.children" :key="i" :index="threeItem.index">
									{{ threeItem.title }}
								</el-menu-item>
                            </el-submenu>
                            <el-menu-item v-else :index="subItem.index" :key="subItem.index">{{ subItem.title }}</el-menu-item>
                        </template>
                    </el-submenu>
                </template>
                <template v-else>
                    <el-menu-item :index="item.index" :key="item.index">
                        <i :class="item.icon"></i>
                        <span slot="title">{{ item.title }}</span>
                    </el-menu-item>
                </template>
            </template>
        </el-menu>
    </div>
</template>

<script>
import bus from '../common/bus';
import treeFormat from "@/utils/common.js"
export default {
    data() {
        return {
            collapse: false,
            items: [
                {
                    icon: 'el-icon-s-home',
                    index: 'home',
                    title: '系统首页'
                },
                {
                    icon: 'el-icon-notebook-2',
                    index: '2',
                    title: '人事管理'
                },
				{
				    icon: 'el-icon-notebook-2',
				    index: 'storehouse',
				    title: '仓库管理'
				},
                {
                    icon: 'el-icon-setting',
                    index: '3',
                    title: '系统管理',
                    children: [
						{
						    index: 'dept',
						    title: '部门管理'
						},
                        {
                            index: 'sysuser',
                            title: '用户管理'
                        },
						 {
						    index: 'role',
						    title: '角色管理'
						},
						{
						    index: 'sysmenu',
						    title: '菜单管理'
						},
                        /* {
                            index: '3-2',
                            title: '三级菜单',
                            subs: [
                                {
                                    index: 'editor',
                                    title: '富文本编辑器'
                                },
                                {
                                    index: 'markdown',
                                    title: 'markdown编辑器'
                                }
                            ]
                        },
                        {
                            index: 'upload',
                            title: '文件上传'
                        } */
                    ]
                }/* ,
                {
                    icon: 'el-icon-lx-emoji',
                    index: 'icon',
                    title: '自定义图标'
                },
                {
                    icon: 'el-icon-pie-chart',
                    index: 'charts',
                    title: 'schart图表'
                },
                {
                    icon: 'el-icon-rank',
                    index: '6',
                    title: '拖拽组件',
                    subs: [
                        {
                            index: 'drag',
                            title: '拖拽列表'
                        },
                        {
                            index: 'dialog',
                            title: '拖拽弹框'
                        }
                    ]
                },
                {
                    icon: 'el-icon-lx-global',
                    index: 'i18n',
                    title: '国际化功能'
                },
                {
                    icon: 'el-icon-lx-warn',
                    index: '7',
                    title: '错误处理',
                    subs: [
                        {
                            index: 'permission',
                            title: '权限测试'
                        },
                        {
                            index: '404',
                            title: '404页面'
                        }
                    ]
                },
                {
                    icon: 'el-icon-lx-redpacket_fill',
                    index: '/donate',
                    title: '支持作者'
                } */
            ]
        };
    },
    computed: {
        onRoutes() {
            return this.$route.path.replace('/', '');
        }
    },
    created() {
        // 通过 Event Bus 进行组件间通信，来折叠侧边栏
        bus.$on('collapse', msg => {
            this.collapse = msg;
            bus.$emit('collapse-content', msg);
        });
		const menuList= localStorage.getItem("MENU_LIST");
		if(menuList){
			//构造树形菜单
			const menus=treeFormat.transformTozTreeFormat(JSON.parse(menuList));
			//按照菜单排序号排序
			var sageOrder = menus.sort(this.compare("num"))
			console.log(sageOrder)
			this.items=sageOrder;
		}else{
			this.items="";
		}
		
    },
	methods:{
		//排序方法
		compare(property) {
				return (firstobj, secondobj) => {
				const firstValue = firstobj[property];
				const secondValue = secondobj[property];
				return secondValue - firstValue; //降序
			};
		}
	}
};
</script>

<style scoped>
.sidebar {
    display: block;
    position: absolute;
    left: 0;
    top: 70px;
    bottom: 0;
    overflow-y: scroll;
}
.sidebar::-webkit-scrollbar {
    width: 0;
}
.sidebar-el-menu:not(.el-menu--collapse) {
    width: 250px;
}
.sidebar > ul {
    height: 100%;
}
</style>
